<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 流年 <liu21st@gmail.com>
// +----------------------------------------------------------------------

// 应用公共文件
function getParam($key, $default_value="") {
    if (strlen($key) == 0) {
        return $default_value;
    }

    $data = $default_value;
    if (isset($_GET[$key])) {
        $data = $_GET[$key];
    } else if (isset($_POST[$key])) {
        $data = $_POST[$key];
    } else if (isset($_COOKIE[$key])) {
        $data = $_COOKIE[$key];
    }

    if (is_string($data)) {
        if (isset($_REQUEST['is_gbk']) && $_REQUEST['is_gbk'] == 1 && !mb_is_utf8($data)) {
            $data = mb_convert_encoding($data, 'UTF-8', 'GBK');
        }
    }

    return $data;
}

function D($model){
    $obj = '\app\index\model\\'.$model;
    $obj = new $obj;
    return $obj;
}
function M($model){
    $obj = '\app\index\model\\'.$model;
    $obj = new $obj;
    return $obj;
}
function C($config){
    return config($config);
}
function get_client_ip($type = 0,$adv=false) {
    $type       =  $type ? 1 : 0;
    static $ip  =   NULL;
    if ($ip !== NULL) return $ip[$type];
    if($adv){
        if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $arr    =   explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
            $pos    =   array_search('unknown',$arr);
            if(false !== $pos) unset($arr[$pos]);
            $ip     =   trim($arr[0]);
        }elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
            $ip     =   $_SERVER['HTTP_CLIENT_IP'];
        }elseif (isset($_SERVER['REMOTE_ADDR'])) {
            $ip     =   $_SERVER['REMOTE_ADDR'];
        }
    }elseif (isset($_SERVER['REMOTE_ADDR'])) {
        $ip     =   $_SERVER['REMOTE_ADDR'];
    }
    // IP地址合法验证
    $long = sprintf("%u",ip2long($ip));
    $ip   = $long ? array($ip, $long) : array('0.0.0.0', 0);
    return $ip[$type];
}